Design Concept:The design inspiration comes from a shield. Shield elements can be traced back to ancient times, associated with keywords such as military and nobility, instilling a sense of trust. It expresses the product's characteristics of sturdiness and durability.Optical PerformanceExtra low-dispersion (ED) glass helps to correct chromatic and spherical aberration to improve clarity and sharpness with accurate color representation without ghosting or halos— especially at the edges of the field of view.Anti-reflection super multi-coated optics improve light transmission and contrast and provides an accurate color rendition.Phase-correcting prism coatings eliminate internal interference to improve color and contrast.Dielectric prism coatings boost internal prism reflectivity to greater than 99% to maximize light transmission through the prism with minimal loss and diffraction.Wide 57° apparent angle of view helps to reduce the appearance of the distracting hand shake that is common when holding high-power optics such as this.Construction DetailsO-ring sealed and argon filled to be waterproof and resistant to internal fogging when moving through extreme changes in temperature or environmental conditions.The well-balanced, ergonomic industrial design magnesium alloy body protects the binoculars from damage without weighing you down.Rubber-armored exterior offers impact protection while providing a slip-resistant grip.Comfortable eye relief improves viewing comfort and reduces eyestrain during long glassing sessions.WarrantyLifetime warranty for binoculars, spotting scopes, monoculars, and daytime riflescopes—built to last with Eyeskey!